flash on 2011-12-7

by Zoltan.Torzsok 07 Dec 2011

Embed

/**
 * Copyright Zoltan.Torzsok ( http://wonderfl.net/user/Zoltan.Torzsok )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/8vrg
 */

package
{
    import away3d.containers.*;
    import away3d.core.base.*;
    import away3d.core.render.Renderer;
    import away3d.materials.*;
    import away3d.primitives.*;
    import away3d.test.Button;

    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    import flash.events.Event;
    import flash.events.MouseEvent;
    import flash.geom.Vector3D;
    import flash.text.TextField;
    import flash.text.TextFormat;
    import flash.utils.getTimer;

    [SWF(width="500", height="400", frameRate="60", backgroundColor="#FFFFFF")]
    public class Triangles extends Sprite
    {
        private var View:View3D;
        private var baseObject:ObjectContainer3D;
        private var triangles:Array;
        private var numTriangles:Number = 400;
        private var label1:TextField;
        private var label2:TextField;
        private var lastTime:Number;
        private var state:String = "Single sided";
        
        public function Triangles()
        {
            super();
            triangles = new Array();
            
            // prep for handling resizing events
            this.stage.scaleMode = StageScaleMode.NO_SCALE;
            this.stage.align = StageAlign.TOP;
            
            // create a 3D-viewport
            View = new View3D({x:250, y:200});
            View.renderer = Renderer.BASIC;
            addChild(View);
            
            View.camera.position = new Vector3D(400, 500, 400);
            View.camera.lookAt( new Vector3D(0, 0, 0) );

            // Make container object to attach other objects to
            baseObject = new ObjectContainer3D();
            View.scene.addChild(baseObject);
            
            // Make some triangles
            var newTri:Triangle;
            for(var i:Number = 0; i < numTriangles; i++)
            {
                newTri = makeTriangle();
                // Move to random position
                var max:Number = 120;
                newTri.x = (Math.random()*max)-(max/2);
                newTri.y = (Math.random()*max)-(max/2);
                newTri.z = (Math.random()*max)-(max/2);
                newTri.material = new ColorMaterial();
                triangles.push(newTri);
                baseObject.addChild(newTri);
            }
            
            addControls();
            addEventListener(Event.ENTER_FRAME, onEnterFrame);
        }
        
        private function onEnterFrame(e:Event):void
        {
            var fps:Number = Math.floor( 1000/(getTimer()-lastTime) );
            label1.text = ""+numTriangles+" "+state+" triangles";
            label2.text = ""+fps+"fps";
            lastTime = getTimer();
            baseObject.rotationY += 1;
            baseObject.rotationZ += 0.1;
            baseObject.rotationX -= 0.05;
            View.render();
        }
        private function makeTriangle():Triangle
        {
            // Create triangle and change face
            var tri:Triangle = new Triangle({bothsides:false});
            tri.a = getVertex();
            tri.b = getVertex();
            tri.c = getVertex();
            return tri;
        }
        private function getVertex():Vertex
        {
            var maxSize:Number = 100;
            var newX:Number = (Math.random()*maxSize)-(maxSize/2);
            var newY:Number = (Math.random()*maxSize)-(maxSize/2);
            var newZ:Number = (Math.random()*maxSize)-(maxSize/2);
            return new Vertex(newX,newY,newZ);
        }
        
        private function addControls():void
        {
            var txtFormat:TextFormat = new TextFormat("_sans",12);
            var pad:Number = 10;
            label1 = new TextField();
            label1.x = pad;
            label1.y = pad;
            label1.width = 140;
            label1.height = 30;
            label1.defaultTextFormat = txtFormat;

            var bothSidedButton:Button = new Button("Both sided", 140, 20);
            bothSidedButton.addEventListener(MouseEvent.CLICK, makeBothsided);
            bothSidedButton.x = pad;
            bothSidedButton.y = 30;
            
            var singleSidedButton:Button = new Button("Toggle single sided", 140, 20);
            singleSidedButton.addEventListener(MouseEvent.CLICK, makeSinglesided);
            singleSidedButton.x = pad;
            singleSidedButton.y = 55;
            
            label2 = new TextField();
            label2.x = pad;
            label2.y = 75;
            label2.width = 140;
            label2.height = 20;
            label2.defaultTextFormat = txtFormat;

            addChild(label1);
            addChild(label2);
            addChild(bothSidedButton);
            addChild(singleSidedButton);
        }
        private function makeBothsided(e:MouseEvent):void
        {
            for(var i:Number = 0; i < triangles.length ; i++){
                var tri:Triangle = triangles[i] as Triangle;
                tri.bothsides = true;
                state = "Both sided";
            }
        }
        private function makeSinglesided(e:MouseEvent):void
        {
            for(var i:Number = 0; i < triangles.length ; i++){
                var tri:Triangle = triangles[i] as Triangle;
                tri.bothsides = false;
                if(tri.scaleX == 1){ // This should have been tri.invertFaces() but that's been broken for so many releases now
                    tri.scaleX = -1;
                } else {
                    tri.scaleX = 1;
                }
                state = "Single sided";
            }
        }
    }
}